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<h2 style="text-align:center">公共 DNS 服务器 IP 地址</h2>
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  <table style="width:100%;border:1px solid #000;">
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      <tr >
        <th>名称 </th>
        <th colspan="2">DNS 服务器 IP 地址</th >
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      <tr>
        <td>114 DNS </td>
        <td> 114.114.114.114 </td>
        <td> 114.114.115.115 </td>
      </tr>
       <tr>
        <td>阿里AliDNS</td>
        <td> 223.5.5.5</td>
        <td> 223.6.6.6 </td>
      </tr>
       <tr>
        <td>百度 BaiduDNS</td>
        <td colspan="2">180.76.76.76</td>
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      <tr>
        <td >Google DNS</td>
        <td>8.8.8.8</td>
        <td>8.8.4.4</td>
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        <td >OpenDNS</td>
        <td>208.67.222.222</td>
        <td>208.67.220.220</td>
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